postive for chlamydia

Me and my boyfriend had been broken up 2 months when one of his friends came to me and admitted he had cheated and had unprotected sex with another girl whilst we were together, i decided that i wanted to go get tested for multiple STD to be safe than sorry, i’ve had my results back this morning and have tested positive for chlamydia even though i never showed any symptoms, i want to get treated asap but i don’t know where i go to get the treatment, would a normal pharmacy give it me if i showed them my text from the clinic, i’m only 17 and no one else i know has ever had to get treated so i have no idea what i’m doing